Gerald Herbert | AP photoRevelers gather for the start of the Society of Saint Anne walking parade in the Bywater section of New Orleans. Overcast skies and the threat of rain couldn't dampen the revelry of Mardi Gras as parades took to the streets, showering costumed merrymakers with trinkets of all kinds.Request to buy this photo

Gerald Herbert | AP photoBabbette Hines, left, and Carol Jean Dixon, both of New Orleans, pose with their costumes representing sad ladies of the night, inspired by Storyville photographer E.J. Bellocq, before the start of the Society of Saint Anne walking parade in the Bywater section of New Orleans.Request to buy this photo

Gerald Herbert | AP photoRevelers gather for the start of the Society of Saint Anne walking parade. FEMA markings from Hurricane Katrina are still displayed on the wall.Request to buy this photo

Gerald Herbert | AP photoRevelers gather and are photographed before the start of the Society of Saint Anne walking parade in the Bywater section of New Orleans during Mardi Gras day.Request to buy this photo

Gerald Herbert | AP photoRevelers yell for beads and trinkets during the Krewe of Orpheus Mardi Gras parade in New Orleans.Request to buy this photo

Gerald Herbert | AP photoFlambeaus parade down St. Charles Avenue during the Krewe of Orpheus Mardi Gras parade.Request to buy this photo

Gerald Herbert | AP photoCardale Waterhouse gets a reminder to stay in formation from an older band member as he marches with the Medard Nelson Charter School band.Request to buy this photo

Gerald Herbert | AP photoHow to pass the time between parades? One New Orleans teenager grabs a quick nap.Request to buy this photo

Gerald Herbert | AP photoA five-year-old grabs handfuls of beads as she rides on her the shoulders of her father.Request to buy this photo

Brett Duke | The Times-Picayune/AP photoThe Krewe of Centurions makes its way through the streets. The theme "Happy Holidays" was showcased on 20 floats this year.Request to buy this photo

Brett Duke | The Times-Picayune/AP photoMembers of the Gold Dusters Dance Team perform as the Krewe of Centurions makes its way through the street in Metairie, La.Request to buy this photo

Michael DeMocke | The Times-Picayune/AP photoA flambeaux carrier is illuminated on St. Charles Avenue as the 460 riders of the satirical Krewe D'Etat roll down the traditional Uptown route with their 22-float presentation entitled "The Dictator's Reading Room."Request to buy this photo

Gerald Herbert | AP photoMembers of the Mardi Gras dance group "The Sirens" perform during the Krewe of Orpheus Mardi Gras parade.Request to buy this photo

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LOS ANGELES -- The question of who can replace Jon Stewart on The Daily Show seems roughly akin to asking his fans what might serve for the sun. His passion, wit and boldness make for a magical combination that will be difficult to re-create when Stewart steps away as host sometime later this year.

Comedy CentralJon Stewart took over as the host of Comedy Central’s The Daily Show in 1999.